Cody Jason Newton is a main character, as well as Marcella's best friend and Abby and Fig's 12-year-old brother, of Barney's Great Adventure. Cody initially acts as the antagonist until the end of the film, finally finding value in Barney's friendship and sense of imagination.
- Cody is the only character ever to be mean to Barney, until he apologizes.
- Next to The Winkster in Barney Live! In New York City, Cody is the closest thing to a true antagonist to Barney. Unlike the Winkster who actually has a sense of humor, Cody scorns what he considers "kid stuff", but he cares deeply for his siblings.